*SUPPORT*
IN: fep lug wif dax zup kiki OUT: BLUE RED PINK YELLOW PINK
IN: fep wif kiki OUT: RED BLUE RED
IN: dax dax wif dax tufa OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: dax zup kiki tufa zup kiki OUT: BLUE BLUE YELLOW BLUE YELLOW
IN: kiki wif dax OUT: BLUE YELLOW BLUE
IN: kiki dax lug zup dax OUT: YELLOW BLUE YELLOW PINK
IN: dax wif lug tufa OUT: YELLOW PINK YELLOW YELLOW PINK YELLOW
IN: lug tufa tufa tufa OUT: PINK PINK PINK PINK PINK PINK PINK PINK
IN: fep zup fep zup fep zup kiki OUT: BLUE RED RED RED
IN: lug wif kiki zup kiki OUT: BLUE PINK BLUE PINK
IN: lug wif kiki OUT: PINK BLUE PINK
IN: dax wif kiki OUT: YELLOW BLUE YELLOW
IN: lug wif fep OUT: PINK RED PINK
IN: lug wif lug OUT: PINK PINK PINK

*QUERY*
IN: kiki OUT: BLUE
IN: dax kiki zup lug tufa OUT: PINK YELLOW BLUE PINK YELLOW BLUE
IN: dax OUT: YELLOW
IN: fep wif lug tufa OUT: RED PINK RED RED PINK RED
IN: fep wif lug zup kiki OUT: BLUE RED PINK RED
IN: lug OUT: PINK
IN: kiki lug wif dax OUT: BLUE PINK YELLOW PINK
IN: kiki wif kiki zup dax OUT: YELLOW BLUE BLUE BLUE
IN: fep OUT: RED
IN: lug kiki wif fep OUT: PINK BLUE RED BLUE

*GRAMMAR*
lug -> PINK 
 kiki -> BLUE 
 dax -> YELLOW 
 fep -> RED 
 u1 wif u2 -> [u1] [u2] [u1] 
 x1 zup u1 -> [u1] [x1] 
 x1 tufa -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 